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Normal strobovideolaryngoscopy: variability in healthy singers

M E Elias1, R T Sataloff, D C Rosen

  • 1American Institute for Voice and Ear Research, Philadelphia, Pennsylvania, USA.

Journal of Voice : Official Journal of the Voice Foundation
|March 1, 1997
PubMed
Summary
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Strobovideolaryngoscopy (SVL) reveals frequent "abnormal" findings in asymptomatic professional singers. Awareness of normal variability is crucial for accurate voice disorder diagnosis in these individuals.

Area of Science:

  • Laryngology
  • Vocal Pedagogy
  • Diagnostic Imaging

Background:

  • Strobovideolaryngoscopy (SVL) is vital for diagnosing voice disorders, analyzing parameters like vocal fold symmetry, periodicity, and movement.
  • Clinical interpretation relies on understanding normal variability, especially for subtle disorders in professional voice users.

Purpose of the Study:

  • To investigate strobovideolaryngoscopic findings in healthy, asymptomatic professional singers.
  • To determine the prevalence of "abnormal" findings in this population and their potential for misinterpretation.

Main Methods:

  • Retrospective review of strobovideolaryngoscopy examinations.
  • Analysis of data from 65 healthy, asymptomatic professional singers.
  • Identification and categorization of "abnormal" findings.

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Main Results:

  • 58% of asymptomatic professional singers exhibited "abnormal" strobovideolaryngoscopic findings.
  • These abnormalities represented six distinct clinical entities.
  • Such findings could be misdiagnosed if baseline evaluations are not established.

Conclusions:

  • "Abnormal" strobovideolaryngoscopic findings are common in asymptomatic professional singers.
  • Physicians must recognize the range of normal laryngeal behavior in this group.
  • Baseline SVL evaluations are important for professional voice users to avoid misdiagnosis.